Impurity filtering and separating device suitable for textile sewage treatment

Abstract

The invention relates to the field of textile sewage treatment, in particular to an impurity filtering and separating device suitable for textile sewage treatment, and aims to solve the problem that a filter screen cannot be cleaned in time due to the fact that the blockage condition of the filter screen cannot be quantitatively judged in the textile sewage filtering process. According to the textile sewage treatment device disclosed by the invention, by utilizing the characteristic that batting impurities in textile sewage are easy to attach, flocculated impurities are adsorbed on the attachment plate through the attachment plate which continuously rotates, and then the impurities are leached and the attachment plate is cleaned in a manner of lifting the attachment plate; meanwhile, by utilizing the characteristic that the rotation resistance of the blocked attachment plate in sewage is increased, the blockage state of the attachment plate is automatically judged through the rotation resistance, the flocculation process is analyzed through the change speed of the rotation resistance, and when the blockage state is serious, a cleaning procedure is automatically performed; meanwhile, flocculates generated during sewage treatment can be fully filtered and cleaned, and the rationality of the cleaning opportunity of the attachment plate is ensured.

Description

Technical Field

[0001] The invention relates to the field of textile wastewater treatment, in particular to an impurity filtering and separating device suitable for textile wastewater treatment. Background Art

[0002] The textile industry is a highly polluting industry. Printing and dyeing wastewater is produced in multiple processes such as washing, dyeing, printing, and sizing. It contains a large amount of organic matter such as dyes, starch, cellulose, lignin, detergents, and inorganic matter such as alkali, sulfide, and various salts. It is highly polluting and needs to be purified. The conventional technical method is to add flocculants to the sewage to degrade and precipitate the sewage, and then filter the floccules and send them to subsequent treatment for sterilization and disinfection. In the process of flocculent filtration, since the floccules have strong adsorption, they are easy to clog the filter holes, resulting in a slowdown in the efficiency of sewage treatment, which requires manual cleaning.

[0003] The existing patent CN117023915A discloses a technical solution, in which the filter is divided into zones to clean the filter, so that the machine does not need to be stopped during the cleaning process, thereby ensuring the operation efficiency. However, although the patent solves the technical problem of cleaning without stopping the machine, the timing of cleaning the filter still needs to be manually determined, which leads to a mismatch between the cleaning frequency and the actual clogging effect of the filter, resulting in the problem that untimely cleaning affects the filtering effect or too early cleaning increases the workload;

[0004] In view of the above technical problems, this application proposes a solution. Summary of the invention

[0005] The present invention utilizes the characteristic that the rotational resistance of the attachment plate increases in sewage after being blocked when the attachment plate rotates, collects and analyzes the rotational resistance, thereby automatically judging the blockage state of the attachment plate, and automatically performs a cleaning procedure when the blockage state is serious, thereby ensuring timely cleaning of the attachment plate. There is no need to manually judge the blockage state of the attachment plate, thereby ensuring the rationality of the cleaning timing of the attachment plate, solving the problem that the blockage situation of the filter screen cannot be quantitatively judged during the textile sewage filtering process, resulting in insufficient timely cleaning of the filter screen, and proposing an impurity filtering and separation device suitable for textile sewage treatment.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] An impurity filtering and separation device suitable for textile wastewater treatment comprises a container shell, a central axis body runs through the container shell, a drain port is opened at the bottom of the container shell, and a valve is arranged inside the drain port;

[0008] The outer wall of the central shaft body is provided with a plurality of lifting slots, the interior of the lifting slots is slidably connected with an attachment plate, a slope cover is fixedly installed on the top of the container shell, and the top end of the central shaft body is higher than the slope cover;

[0009] A recovery water tank is fixedly installed on the outside of the container shell, and the recovery water tank is located near the top of the container shell. A recovery hole is opened on the container shell, and the recovery hole is semicircular, and the lower edge of the recovery hole is flush with the surface of the recovery water tank;

[0010] The impurity filtering and separating device is controlled by a controller.

[0011] As a preferred embodiment of the present invention, the controller includes a rotation detection unit, a central control unit, a delivery management unit and a rotation statistics unit;

[0012] The rotation detection unit is used to collect the resistance torque when the central axis rotates, and determine the attachment condition on the attachment plate according to the resistance torque;

[0013] The delivery management unit is used to make decisions on the delivery of flocculants and send the decisions to the central control unit;

[0014] The central control unit is used to control the rotation of the central axis and implement the flocculant placement control according to the flocculant placement decision;

[0015] The rotation statistics unit is used to count the rotation time of the central axis, and at the same time obtain the real-time rotation resistance torque through the rotation detection unit, analyze the flocculation effect according to the rotation time and the rotation resistance torque, and generate the flocculation efficiency.

[0016] As a preferred embodiment of the present invention, the dosage management unit obtains the volume of sewage entering the container shell through the water inlet pipe, generates the flocculant dosage according to the sewage volume through a preset relationship, and sends the flocculant dosage to the central control unit.

[0017] As a preferred embodiment of the present invention, the rotation statistics unit performs timing after acquiring the rotation start signal to obtain the rotation duration, and the rotation statistics unit sends the real-time rotation duration to the central control unit;

[0018] The rotation detection unit records the torque borne by the central axis during the uniform rotation as the real-time torque, and sends the acquired real-time torque to the rotation statistics unit.

[0019] As a preferred embodiment of the present invention, after acquiring the real-time torque, the rotation statistics unit draws a torque variation curve with the rotation duration as the horizontal axis and the torque as the vertical axis, and sends the torque variation curve and the coordinate system to the rotation statistics unit.

[0020] As a preferred embodiment of the present invention, after acquiring the torque change image, the rotation statistics unit selects a certain distance from the front end of the torque change image and records it as the starting segment. The rotation statistics unit reads the maximum torque value in the starting segment and simultaneously acquires the sewage volume. The interference effect result of the maximum torque value and the sewage volume is calculated by a preset relationship to generate a torque reference value FN. Where F1 is the maximum torque, V is the sewage volume;

[0021] If the torque reference value is not less than the preset torque upper limit, a filter blockage signal is generated, and after the rotation statistics unit generates the filter blockage signal, the filter blockage signal is sent to the central control unit;

[0022] After obtaining the filter blockage signal, the central control unit generates a lifting signal to the central axis, controls the attachment plate to be aligned with the opening slot, and moves the attachment plate to the top of the slope cover through the central axis for cleaning.

[0023] As a preferred embodiment of the present invention, the rotation statistics unit selects a portion other than the starting segment in the torque change image and records it as an operating segment. The rotation statistics unit selects a torque value on the torque change image once every period of time in the operating segment, calculates the torque change amplitude through the torque values ​​of two adjacent positions, and compares the torque change amplitude with a preset judgment threshold to generate a torque change signal or a torque balance signal.

[0024] As a preferred embodiment of the present invention, the rotation statistics unit obtains the last torque change signal, and records the last torque change signal behind as the flocculation end area, and records the last torque change signal before as the flocculation progress area;

[0025] The rotating statistical unit counts the total length of the flocculation area. If the total length of the flocculation area is greater than a preset length, a slow flocculation signal is generated. The flocculation statistical unit sends the slow flocculation signal to the management device through the network.

[0026] The rotation statistical unit counts the number of occurrences of the torque change signal and the torque balance signal in the flocculation area respectively and calculates the ratio, generates a flocculation efficiency ratio according to the ratio calculation result, and generates a flocculation efficiency insufficient signal if the flocculation efficiency is less than or equal to the preset efficiency ratio, and sends the flocculation efficiency insufficient signal to the management device through the network.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. In the present invention, when treating textile wastewater, the impurities in the textile wastewater are flocculated and agglomerated by a flocculant. At the same time, the characteristic that the fluff impurities in the textile wastewater are easy to adhere is utilized, and the flocculated impurities are adsorbed on the attachment plate by a continuously rotating attachment plate. Then, the impurities are leached out and the attachment plate is cleaned by lifting and lowering the attachment plate, thereby ensuring the cleaning effect of the attachment plate.

[0029] 2. In the present invention, when the attachment plate rotates, the characteristic that the rotational resistance of the attachment plate increases after being blocked in the sewage is utilized, and the rotational resistance is collected and analyzed to automatically determine the blockage state of the attachment plate. When the blockage state is serious, the cleaning procedure is automatically performed to ensure timely cleaning of the attachment plate. At the same time, there is no need to manually determine the blockage state of the attachment plate, thereby ensuring the rationality of the cleaning timing of the attachment plate.

[0030] 3. In the present invention, the changing speed of the rotational resistance of the attachment plate is analyzed, thereby analyzing the attachment speed of the flocculants on the attachment plate. The flocculation process is analyzed according to the changing speed of the flocculants on the attachment plate, thereby ensuring that the flocculants generated during sewage treatment can be fully filtered and cleaned, thereby improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0032] Figure 1 is a system block diagram of the present invention;

[0033] Figure 2 is a system flow chart of the present invention;

[0034] Figure 3 is a system block diagram of the present invention;

[0035] Figure 4 is a system block diagram of the present invention;

[0036] Figure 5 It is a system flow chart of the present invention.

[0037] In the figure: 1. container shell; 2. recovery trough; 21. recovery hole; 3. slope cover; 4. central axis; 41. lifting slide; 5. attachment plate; 6. drainage outlet. DETAILED DESCRIPTION

[0038] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Embodiment 1:

[0040] See also Figure 1 - Figure 5 As shown, an impurity filtering and separating device suitable for textile wastewater treatment comprises a container shell 1, a central shaft body 4 is passed through the container shell 1, the bottom of the central shaft body 4 is connected to a motor through a coupling, and the central shaft body 4 is driven to rotate by the motor, a drain port 6 is opened at the bottom of the container shell 1, and a valve is arranged inside the drain port 6;

[0041] The outer wall of the central shaft body 4 is provided with a plurality of lifting slots 41, and an attachment plate 5 is slidably connected inside the lifting slots 41. The attachment plate 5 moves in the lifting slots 41 by chain transmission, screw lifting or slide rail movement.

[0042] A slope cover 3 is fixedly installed on the top of the container shell 1. The slope cover 3 is provided with the same number of opening slots as the attachment plate 5. The inner size of the opening slots is larger than the attachment plate 5, so that the attachment plate 5 can pass through the opening slots vertically. At the same time, the flocculant used for sewage treatment can be put through the opening slots. The top end of the central axis 4 is higher than the slope cover 3.

[0043] A recovery water tank 2 is fixedly installed outside the container shell 1. The recovery water tank 2 is located near the top of the container shell 1. A recovery hole 21 is opened on the container shell 1. The recovery hole 21 is semicircular, and the lower edge of the recovery hole 21 is flush with the surface of the recovery water tank 2. The recovery water tank 2 is used to recover the sewage brought out when the attachment plate 5 is raised and the sewage generated when the attachment plate 5 is cleaned, so as to avoid sewage overflow and polluting the working environment;

[0044] The impurity filtering and separating device is controlled by a controller.

[0045] Embodiment 2:

[0046] See also Figure 1 - Figure 5 As shown, the controller includes a rotation detection unit, a central control unit, a delivery management unit and a rotation statistics unit.

[0047] The delivery management unit obtains the volume of sewage entering the container shell 1 through the water inlet pipe external to the textile sewage treatment device, generates the flocculant delivery amount according to the sewage volume through a preset relationship, and sends the flocculant delivery amount to the central control unit. The central control unit sends a delivery instruction to the flocculant delivery device, thereby controlling the flocculant delivery device to deliver a fixed amount of flocculant;

[0048] After the central control unit completes the execution of the flocculant delivery instruction, it sends a rotation start signal to the rotation statistics unit, and at the same time generates an instruction to send to the motor under the central shaft 4, and the motor under the central shaft 4 starts to rotate;

[0049] The rotation statistics unit starts timing after obtaining the rotation start signal, and records the timing duration as the rotation duration. The rotation statistics unit sends the real-time rotation duration to the central control unit;

[0050] The rotation detection unit collects the resistance of the central shaft body 4 when it rotates through the coupling connecting the motor and the central shaft body 4, so as to obtain the resistance torque. When the rotation detection unit collects the resistance torque, the collected resistance torque is the torque borne by the central shaft body 4 when it just starts to rotate, which is recorded as the starting torque. The rotation detection unit records the torque borne by the central shaft body 4 during the uniform rotation as the real-time torque, and the rotation detection unit sends the obtained real-time torque to the rotation statistics unit;

[0051] After acquiring the real-time torque, the rotation statistics unit draws a torque change curve with the rotation duration as the horizontal axis and the torque as the vertical axis, and sends the torque change curve and the coordinate system to the rotation statistics unit;

[0052] After acquiring the torque change image, the rotation statistics unit selects a certain distance from the front end of the torque change image and records it as the starting segment. The rotation statistics unit reads the maximum torque in the starting segment. The rotation statistics unit obtains the sewage volume through the delivery management unit and calculates the interference effect of the maximum torque and the sewage volume through a preset relationship to generate a torque reference value FN. Where F1 is the maximum torque, V is the sewage volume;

[0053] The rotation statistics unit compares the torque reference value with the preset torque upper limit. If the torque reference value is less than the preset torque upper limit, a filter normal signal is generated. If the torque reference value is not less than the preset torque upper limit, a filter blockage signal is generated. After generating the filter blockage signal, the rotation statistics unit sends the filter blockage signal to the central control unit.

[0054] After obtaining the filter blockage signal, the central control unit generates a lifting signal to the central axis 4, thereby controlling the central axis 4 to drive the attachment plate 5 to rotate until it is aligned with the opening groove on the slope cover 3, and rises through the lifting slot 41 on the central axis 4, thereby moving the attachment plate 5 to the top of the slope cover 3 for cleaning.

[0055] Embodiment three:

[0056] See also Figure 1 - Figure 5 As shown, the rotation statistics unit selects a portion other than the starting segment in the torque change image, records it as a running segment, and obtains the torque at the starting point in the running segment. The rotation statistics unit starts from the starting point in the running segment and selects a torque value on the torque change image every time period, calculates the torque change amplitude through the torque values ​​of two adjacent positions, and compares the torque change amplitude with a preset judgment threshold. If the torque change amplitude is greater than the preset judgment amplitude, a torque change signal is generated. If the torque change amplitude is not greater than the preset judgment amplitude, a torque balance signal is generated.

[0057] The rotation statistics unit records the time period corresponding to when the torque change signal is generated as the flocculation progress time period, and records the time period corresponding to when the torque balance signal is generated as the flocculation static time period;

[0058] The rotating statistical unit counts the flocculation time period and the flocculation static time period. The rotating statistical unit obtains the last flocculation time period, and records the rear of the last flocculation time period as the flocculation end area, and records the front of the last flocculation time period as the flocculation progress area.

[0059] The rotating statistical unit counts the total length of the flocculation area. If the total length of the flocculation area is greater than the preset length, a slow flocculation signal is generated. If the total length of the flocculation area is not greater than the preset length, a normal flocculation signal is generated. The flocculation statistical unit sends the slow flocculation signal to the management device through the network, and generates an alarm reminder through the management device.

[0060] The rotating statistical unit counts the number of occurrences of the flocculation time period and the flocculation static time period in the flocculation area respectively, and calculates the ratio of the number of occurrences of the flocculation time period and the number of occurrences of the flocculation static time period, generates a flocculation efficiency ratio according to the ratio calculation result, and compares the flocculation efficiency ratio with a preset ratio threshold value. If the efficiency ratio is greater than the preset efficiency ratio, no response is made. If the flocculation efficiency is less than or equal to the preset efficiency ratio, a flocculation efficiency deficiency signal is generated, and the flocculation efficiency deficiency signal is sent to the management device through the network. The management device generates an alarm reminder after obtaining the flocculation efficiency deficiency signal.

[0061] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An impurity filtration and separation device suitable for textile wastewater treatment, characterized in that: It comprises a container shell (1), wherein a central axis (4) runs through the interior of the container shell (1), a drainage port (6) is provided at the bottom of the container shell (1), and a valve is provided inside the drainage port (6); The outer wall of the central axis (4) is provided with a plurality of lifting slots (41), the interior of the lifting slots (41) is slidably connected with an attachment plate (5), a slope cover (3) is fixedly installed on the top of the container shell (1), and the top end of the central axis (4) is higher than the slope cover (3); A recovery water tank (2) is fixedly mounted on the outside of the container shell (1), and the recovery water tank (2) is located near the top of the container shell (1). A recovery hole (21) is opened on the container shell (1), and the recovery hole (21) is semicircular, and the lower edge of the recovery hole (21) is flush with the surface of the recovery water tank (2); The impurity filtering and separating device is controlled by a controller.

2. The impurity filtering and separation device suitable for textile wastewater treatment according to claim 1 is characterized in that: The controller includes a rotation detection unit, a central control unit, a delivery management unit and a rotation statistics unit; The rotation detection unit is used to collect the resistance torque when the central axis (4) rotates, and determine the attachment condition on the attachment plate (5) according to the resistance torque; The delivery management unit is used to make decisions on the delivery of flocculants and send the decisions to the central control unit; The central control unit is used to control the rotation of the central axis (4), and at the same time, to control the placement of the flocculant according to the flocculant placement decision; The rotation statistics unit is used to count the rotation time of the central axis (4), and simultaneously obtain the real-time rotation resistance torque through the rotation detection unit, and analyze the flocculation effect according to the rotation time and the rotation resistance torque to generate the flocculation efficiency.

3. The impurity filtering and separation device suitable for textile wastewater treatment according to claim 2 is characterized in that: The dosage management unit obtains the volume of sewage entering the container shell (1) through the water inlet pipe, generates the dosage of flocculant according to the sewage volume through a preset relationship, and sends the dosage of flocculant to the central control unit.

4. The impurity filtering and separation device suitable for textile wastewater treatment according to claim 2 is characterized in that: The rotation statistics unit performs timing after obtaining the rotation start signal to obtain the rotation duration, and the rotation statistics unit sends the real-time rotation duration to the central control unit; The rotation detection unit records the torque borne by the central axis (4) during the uniform rotation as real-time torque, and sends the acquired real-time torque to the rotation statistics unit.

5. The impurity filtering and separation device suitable for textile wastewater treatment according to claim 4 is characterized in that: After acquiring the real-time torque, the rotation statistics unit draws a torque variation curve with the rotation duration as the horizontal axis and the torque as the vertical axis, and sends the torque variation curve and the coordinate system to the rotation statistics unit.

6. The impurity filtering and separation device suitable for textile wastewater treatment according to claim 5 is characterized in that: After acquiring the torque change image, the rotation statistics unit selects a certain distance from the front end of the torque change image and records it as the starting segment. The rotation statistics unit reads the maximum torque value in the starting segment and obtains the sewage volume at the same time. The interference effect result of the maximum torque value and the sewage volume is calculated by a preset relationship to generate a torque reference value FN. Where F1 is the maximum torque, V is the sewage volume; If the torque reference value is not less than the preset torque upper limit, a filter blockage signal is generated, and after the rotation statistics unit generates the filter blockage signal, the filter blockage signal is sent to the central control unit; After acquiring the filter blockage signal, the central control unit generates a lifting signal to the central axis (4), controls the attachment plate (5) to align with the opening slot, and moves the attachment plate (5) to the top of the slope cover (3) through the central axis (4) for cleaning.

7. The impurity filtering and separation device suitable for textile wastewater treatment according to claim 2 is characterized in that: The rotation statistics unit selects a portion other than the starting segment in the torque change image and records it as an operating segment. The rotation statistics unit selects a torque value on the torque change image every certain period of time in the operating segment, calculates the torque change amplitude through the torque values ​​of two adjacent positions, and compares the torque change amplitude with a preset judgment threshold to generate a torque change signal or a torque balance signal.

8. The impurity filtering and separating device suitable for textile wastewater treatment according to claim 7 is characterized in that: The rotation statistics unit obtains the last torque change signal, and records the area behind the last torque change signal as the flocculation end area, and records the area before the last torque change signal as the flocculation progress area; The rotating statistical unit counts the total length of the flocculation area. If the total length of the flocculation area is greater than a preset length, a slow flocculation signal is generated. The flocculation statistical unit sends the slow flocculation signal to the management device through the network. The rotation statistical unit counts the number of occurrences of the torque change signal and the torque balance signal in the flocculation area respectively and calculates the ratio, generates a flocculation efficiency ratio according to the ratio calculation result, and generates a flocculation efficiency insufficient signal if the flocculation efficiency is less than or equal to the preset efficiency ratio, and sends the flocculation efficiency insufficient signal to the management device through the network.

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